3 Wing Slot Cutter Router Bits by K-Premium

Micro-grain carbide cutters

See Options Below

Shop with Confidence. Our GUARANTEE.

3 flute, carbide-tipped with 8mm (approx. 5/16") bore and totally enclosed ball bearing guides. Cut slots (kerfs) for biscuits, tongue and groove joints, T-moldings, lap joints, and rabbets. The cutter, arbor, and bearing are available separately or as a complete assembly with a 5/16" arbor and 7/8" bearing.

Item #18646 and #18648 are complete assemblies, including arbor and 7/8" OD bearing.

Item #12206 and #12208 are slot cutters only without arbor or bearing.

Router Safety Chart - Suggested Speeds:

Bit Diameter Max Speed
up to 1" 24000 RPM
1-1/16" to 2" 18000 RPM
2-1/16" to 2-1/2" 16000 RPM
2-9/16" to 3" 14500 RPM
over 3" 12000 RPM

Router Safety Tips:

  • Always wear eye and ear protection.
  • Always use properly sharpened bits.
  • Never use bits that are dull or damaged.
  • Shank must be completely inserted into collet and then backed-off approximately 1/16".
  • Don't "bottom-out" bit in collet.
  • Never partially insert bit into collet. Minimum 1" of shank needs to be in collet.
  • Tighten bit securely and recheck periodically for possible slippage or "run-out" due to wear.
  • Keep collet clean and replace if worn.
  • Never start the router with the bit in contact with wood.
  • Always feed your work or router in the proper direction against the bit rotation.
  • Don't force feed the bit or overload your router, Feed at a constant moving speed to avoid burning the wood.
  • Do not face tool's discharge when operating.
  • Always unplug router when changing bits or making adjustments.
  • Use a router table and fence whenever possible.
  • Make sure your work piece is properly secured and use push blocks, sticks and featherboards whenever possible.
  • Keep all your bits, bearings and assemblies clean, lubricated, and securely fastened. To avoid damage, store them properly in a pouch, box or tray.
  • The bigger the bit, the lower RPM recommended (see chart).

The K-PREMIUM Difference:

  • LIFETIME GUARANTEE! Against Defects in workmanship and materials.
  • Micro-grain carbide: Premium fine grain carbide yields a longer cutting life, and allows multiple resharpenings.
  • High Hook & Shear angles: Allows cutter to slice smoothly into stock, producing the cleanest, splinter free cuts.
  • Anti-kickback design: Round shoulder between cutters drastically reduces the chance of kickback.
  • Diamond honed cutters: Multi-axis CNC grinders sharpen to a 600 grit mirror finish. Ground to +/- .005"
  • Non-stick coating: Baked on heat resistant coating prevents sawdust, resin and pitch build-up.
  • Safety Gauge Shank: Lines etched on the shank help you seat the bit in the router collet. A K-PREMIUM exclusive.

Product Options

Type Large Diam Cut Height Cut Depth Arbor Item # Price    Qty
Assembly 1-7/8" 5/32" 1/2" 1/2" 18646 $29.00
Assembly 1-7/8" 1/4" 1/2" 1/2" 18648 $29.00
Cutter Only 1-7/8" 5/32" 1/2" 5/16" 12206 $22.95
Cutter Only 1-7/8" 1/4" 1/2" 5/16" 12208 $22.95
Slot Cutter Arbor 5/16" with 7/8" OD Bearing 12194 $8.00

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